US 11,757,422 B2
Quadrature hybrid with variable capacitor tuning network
Venkata Naga Koushik Malladi, Chandler, AZ (US); and Joseph Staudinger, Gilbert, AZ (US)
Assigned to NXP USA, Inc., Austin, TX (US)
Filed by NXP USA, Inc., Austin, TX (US)
Filed on Oct. 8, 2021, as Appl. No. 17/497,658.
Prior Publication US 2023/0115944 A1, Apr. 13, 2023
Int. Cl. H03H 7/01 (2006.01); H01P 5/22 (2006.01)
CPC H03H 7/0115 (2013.01) [H01P 5/227 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A quadrature hybrid comprising:
a first port;
a second port;
a third port;
a fourth port;
first, second, and third inductors;
first, second, third, and fourth capacitors; and
a first variable capacitor tuning network connected between the first port and the fourth port;
a second variable capacitor tuning network connected between the second port and the third port; and
wherein:
the first and second capacitors are coupled in series between the first port and the fourth port, with a first intermediate node between the first and second capacitors;
the third and fourth capacitors are coupled in series between the second port and the third port, with a second intermediate node between the third and fourth capacitors;
the first inductor is coupled between the first port and the second port;
the second inductor is coupled between the first intermediate node and the second intermediate node; and
the third inductor is coupled between the fourth port and the third port.